303.5 Mini Hydraulic Excavator Work Tool Control Caterpillar


Work Tool Control
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303.5 Mini Hydraulic Excavator [SEBU7296]
OPERATOR STATION
303.5 Mini Hydraulic Excavator Work Tool Control
1.1. Primary Auxiliary Hydraulic Circuit (If Equipped)
2.1. Secondary Auxiliary Hydraulic Circuit (If Equipped)

Primary Auxiliary Hydraulic Circuit (If Equipped)




Illustration 1g00653314

The left pedal is the auxiliary hydraulic control pedal.

------ WARNING! ------

Unexpected operation of the auxiliary control circuit can cause injury or death.

To avoid unexpected operation of the auxiliary control circuit, always put the cover on the auxiliary control pedal while traveling or whenever the auxiliary lines are not being used.

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Illustration 2g00696638

The following auxiliary lines are routed to the stick: the left side line (3) and the right side line (2) .

The auxiliary lines are equipped with coupler assemblies. Wipe all coupler assemblies before you connect the work tools.

The auxiliary lines must be relieved of pressure in order to connect the coupler assemblies to the work tool. Relieve the pressure in the auxiliary hydraulic lines by performing the following steps.

  1. Turn the engine start switch key to the ON position. Do not start the engine.

  1. Move the auxiliary hydraulic pedal to each side.

  1. Turn the engine start switch key to the OFF position.

Secondary Auxiliary Hydraulic Circuit (If Equipped)




Illustration 3g00526136

The lines to the bucket cylinder can be equipped with coupler assemblies. The lines can be used to operate a secondary auxiliary hydraulic circuit. The functions that operate the bucket can be used to operate the secondary auxiliary hydraulic circuit. Refer to Operation and Maintenance Manual, "Work Tool Control (Joystick)"for operating information.

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